CHEMICAL REACTION ENGINEERING QUIZ

A photochemical reaction is

Accompanied with emission of light

Initiated by light

Catalysed by light

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

For the gaseous reaction 2A → B, where the feed consists of 50 mole % A and 50 mole % inerts, the expansion factor is

1

-0.5

-0.25

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not endothermic in nature?

Gasification of carbon

Steam reforming of naphtha

Thermal cracking of fuel oil

Combustion of sulphur

TRUE ANSWER : ?
YOUR ANSWER : ?

A second order reaction of the form A + B → C is called a pseudo-first order reaction, when

CA0 > CB0

CB0 > CA0

CA0 = CB0

CB0 ≥ CB0

TRUE ANSWER : ?
YOUR ANSWER : ?

For identical flow rate, feed composition and for elementary first order reactions, 'N' equal sized mixed reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for constant density systems. This is true, when the value of 'N' is

≥1

>1

1

∞

TRUE ANSWER : ?
YOUR ANSWER : ?

Fluidised bed reactor is characterised by

Uniformity of temperature

Absence of continuous catalyst regeneration facility

Very small pressure drop

Comparatively smaller equipment

TRUE ANSWER : ?
YOUR ANSWER : ?

Velocity of a reaction depends upon the

Concentration of the reactants

Temperature at which the reaction is carried

All of these

Nature of the reactants

TRUE ANSWER : ?
YOUR ANSWER : ?

A reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length

Decreases

Is at the highest allowable temperature throughout

First increases and then decreases

Increases

TRUE ANSWER : ?
YOUR ANSWER : ?

With increase in the space time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will

Increase

Remain same

Data in insufficient; can't be predicted

Decrease

TRUE ANSWER : ?
YOUR ANSWER : ?

The concentration of A in a first order reaction, A → B, decreases

Logarithmically with time

Linearly with time

Exponentially with time

Very abruptly towards the end of the reaction

TRUE ANSWER : ?
YOUR ANSWER : ?

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